:root {
  color-scheme: light;
  font-family: Arial, sans-serif;
  font-size: 16px;
  --color-page: #f4f7fb;
  --color-surface: #ffffff;
  --color-surface-muted: #eff4fb;
  --color-text: #1d2a3f;
  --color-text-muted: #40536f;
  --color-primary: #2164ce;
  --color-primary-strong: #1658bd;
  --color-primary-soft: #e8f0ff;
  --color-border: #dce5f2;
  --color-danger: #b42318;
  --color-danger-soft: #fee8e7;
  --color-success: #18794e;
  --color-success-soft: #e5f6ed;
  --focus-ring: #0f5fd7;
  --radius-control: .4rem;
  --radius-card: .8rem;
  --shadow-card: 0 .2rem .8rem #10204012;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  background: var(--color-page);
  color: var(--color-text);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-page: #101827;
  --color-surface: #182235;
  --color-surface-muted: #233149;
  --color-text: #f1f5f9;
  --color-text-muted: #b8c5d9;
  --color-primary: #6ea8ff;
  --color-primary-strong: #9cc2ff;
  --color-primary-soft: #263a59;
  --color-border: #394b68;
  --color-danger: #ff8a80;
  --color-danger-soft: #4a272b;
  --color-success: #63d297;
  --color-success-soft: #1d4135;
  --focus-ring: #9cc2ff;
  --shadow-card: 0 .3rem 1rem #00000052;
}
body { margin: 0; }
*, *::before, *::after { box-sizing: border-box; }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 3.5rem; padding: 0 1rem; background: #fff; border-bottom: 1px solid #dce5f2; }
.brand { color: #1658bd; font-weight: 800; text-decoration: none; }.nav-link { color: #253650; padding: .55rem .75rem; text-decoration: none; }.nav-link.active { color: #1658bd; border-bottom: 2px solid #2164ce; }
.container { max-width: 1100px; margin: 2rem auto; padding: 0 1.25rem; }
.card { background: #fff; border: 1px solid #dce5f2; border-radius: .8rem; padding: 1.5rem; box-shadow: 0 .2rem .8rem #10204012; }
.module-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin-top: 1rem; }.module-card { background: #fff; border: 1px solid #dce5f2; border-radius: .8rem; padding: 1.25rem; box-shadow: 0 .2rem .8rem #10204012; }.module-card h2 { color: #1658bd; margin-top: 0; }.button-link { display: inline-block; background: #2164ce; border-radius: .4rem; color: #fff; font-weight: 700; padding: .7rem 1rem; text-decoration: none; }
.metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: .75rem; margin: 1rem 0; }.metric-grid div { background: #eff4fb; border-radius: .6rem; padding: .9rem; }.metric-grid dt { color: #40536f; font-size: .9rem; }.metric-grid dd { color: #1658bd; font-size: 1.5rem; font-weight: 700; margin: .25rem 0 0; }.activity-list { margin: .5rem 0 0; padding-left: 1.25rem; }
.segment-links { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .6rem; }.segment-links a { color: #1658bd; margin-right: .5rem; }
.auth-card { max-width: 24rem; margin: 10vh auto; }
label { display: block; margin: 1rem 0; font-weight: 600; }
input, select { box-sizing: border-box; display: block; width: 100%; margin-top: .4rem; padding: .7rem; border: 1px solid #aebdd0; border-radius: .4rem; background: #fff; }
textarea { box-sizing: border-box; display: block; min-height: 6rem; width: 100%; margin-top: .4rem; padding: .7rem; border: 1px solid #aebdd0; border-radius: .4rem; }
fieldset { border: 1px solid #dce5f2; border-radius: .6rem; margin: 1rem 0; padding: .25rem 1rem 1rem; } legend { color: #1658bd; font-weight: 700; padding: 0 .35rem; }
button { background: #2164ce; color: #fff; border: 0; border-radius: .4rem; padding: .7rem 1rem; font-weight: 700; cursor: pointer; }
.danger { background: #b42318; margin-left: .5rem; }.readonly-results { border-top: 1px solid #dce5f2; margin-top: 1.5rem; padding-top: .5rem; }.record-list { padding-left: 1.2rem; }.record-list li { margin: .8rem 0; }.record-list a { margin-left: .45rem; }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.alert { padding: .75rem; border-radius: .4rem; }.alert.error { background: #fee8e7; color: #a32020; }.alert.info { background: #e8f0ff; color: #16498d; }
pre { overflow: auto; white-space: pre-wrap; }
table { width: 100%; border-collapse: collapse; margin-top: 1rem; font-size: .9rem; } th, td { padding: .55rem; text-align: left; border-bottom: 1px solid #dce5f2; } th { color: #1658bd; }
.inline { display: inline; margin-left: .5rem; }.inline input { display: none; }.inline button { padding: .35rem .55rem; background: #b42318; }
.pagination { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; }
.attempt-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }.attempt-grid h2 { color: #1658bd; font-size: 1rem; }
.state { padding: .75rem; border-radius: .4rem; }.state-empty { background: #eff4fb; color: #40536f; }.state-loading { background: #e8f0ff; color: #16498d; }.state-error { background: #fee8e7; color: #a32020; }
@media (max-width: 600px) { .container { margin: 1rem auto; }.toolbar { align-items: flex-start; flex-direction: column; } table { display: block; overflow-x: auto; } .danger { margin: .5rem 0 0; } .attempt-grid { grid-template-columns: 1fr; } }

/* Design-system component layer. Existing selectors remain for template compatibility. */
body { background: var(--color-page); color: var(--color-text); line-height: 1.5; }
a { color: var(--color-primary-strong); } a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: .2rem solid var(--focus-ring); outline-offset: .16rem; }
.site-header, .card, .module-card, input, select, textarea, fieldset { background: var(--color-surface); border-color: var(--color-border); }
.site-header { position: sticky; top: 0; z-index: 20; }
.site-header__actions { display: flex; align-items: center; gap: var(--space-2); }
.brand, .module-card h2, fieldset legend, th { color: var(--color-primary-strong); }
.nav-link { color: var(--color-text); }.nav-link.active { color: var(--color-primary); border-color: var(--color-primary); }
.container { max-width: 72rem; }
.card, .module-card { border-radius: var(--radius-card); box-shadow: var(--shadow-card); }
.button, button, .button-link { align-items: center; background: var(--color-primary); border: 1px solid transparent; border-radius: var(--radius-control); color: #fff; display: inline-flex; font: inherit; font-weight: 700; gap: var(--space-2); justify-content: center; min-height: 2.75rem; padding: .65rem 1rem; text-decoration: none; }
.button:hover, button:hover, .button-link:hover { filter: brightness(.94); }.button:disabled, button:disabled { cursor: not-allowed; opacity: .55; }
.button--secondary { background: var(--color-surface-muted); border-color: var(--color-border); color: var(--color-text); }.button--ghost { background: transparent; color: var(--color-primary-strong); }.button--danger, .danger { background: var(--color-danger); color: #fff; }
.theme-toggle { background: transparent; border-color: var(--color-border); color: var(--color-text); min-height: 2.25rem; padding: .35rem .6rem; }
.skip-link { background: var(--color-primary); color: #fff; left: var(--space-3); padding: var(--space-2) var(--space-3); position: fixed; top: -5rem; z-index: 100; }.skip-link:focus { top: var(--space-3); }
.page-header { margin-bottom: var(--space-5); }.page-header h1 { margin: 0; }.page-header p { color: var(--color-text-muted); margin: var(--space-1) 0 0; }.page-header__context { display: flex; align-items: flex-start; gap: var(--space-3); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: var(--space-2); list-style: none; margin: 0 0 var(--space-3); padding: 0; }.breadcrumbs li + li::before { color: var(--color-text-muted); content: "/"; margin-right: var(--space-2); }
.metric-grid div, .metric-card { background: var(--color-surface-muted); border: 1px solid var(--color-border); border-radius: .6rem; padding: .9rem; }.metric-grid dt, .metric-card dt, .metric-card small { color: var(--color-text-muted); }.metric-grid dd, .metric-card dd { color: var(--color-primary-strong); }
.table-container { max-width: 100%; overflow-x: auto; }.table-container table { min-width: 38rem; }
input, select, textarea { color: var(--color-text); }.state-empty { background: var(--color-surface-muted); color: var(--color-text-muted); }.state-loading, .alert.info { background: var(--color-primary-soft); color: var(--color-text); }.state-error, .alert.error { background: var(--color-danger-soft); color: var(--color-danger); }.state-success, .alert.success { background: var(--color-success-soft); color: var(--color-success); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } }
@media (max-width: 600px) { .site-header { padding: 0 var(--space-3); }.container { padding: 0 var(--space-3); }.theme-toggle [data-theme-label] { display: none; }.page-header__context { flex-direction: column; }.table-container table { min-width: 32rem; } }

/* Application shell and dashboard layout. */
.brand { align-items: center; display: inline-flex; gap: var(--space-2); letter-spacing: .02em; }.brand__mark { align-items: center; background: var(--color-primary-soft); border-radius: .45rem; color: var(--color-primary-strong); display: inline-flex; font-size: .82rem; height: 1.8rem; justify-content: center; width: 1.8rem; }
.primary-navigation { align-items: center; display: flex; gap: var(--space-1); }.navigation-toggle { display: none; }
.context-navigation { background: var(--color-surface); border-bottom: 1px solid var(--color-border); padding: var(--space-2) max(var(--space-4), calc((100vw - 72rem) / 2)); }.context-navigation ol { display: flex; flex-wrap: wrap; gap: var(--space-2); list-style: none; margin: 0; padding: 0; }.context-navigation li + li::before { color: var(--color-text-muted); content: "/"; margin-right: var(--space-2); }.context-navigation span { color: var(--color-text-muted); }
.dashboard-hero { align-items: flex-end; display: flex; gap: var(--space-4); justify-content: space-between; margin: var(--space-6) 0 var(--space-5); }.dashboard-hero h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin: 0; }.dashboard-hero p { color: var(--color-text-muted); margin: var(--space-1) 0 0; max-width: 42rem; }
.eyebrow, .module-card__eyebrow { color: var(--color-primary-strong); font-size: .78rem; font-weight: 800; letter-spacing: .06em; margin: 0 0 var(--space-1); text-transform: uppercase; }.section-heading { align-items: end; display: flex; gap: var(--space-4); justify-content: space-between; margin-bottom: var(--space-4); }.section-heading h2 { margin: 0; }.section-heading > p { color: var(--color-text-muted); margin: 0; max-width: 30rem; }
.dashboard-summary { padding: var(--space-5); }.activity-panel { border-top: 1px solid var(--color-border); margin-top: var(--space-5); padding-top: var(--space-4); }.activity-panel h3 { margin: 0 0 var(--space-2); }.activity-list { list-style: none; padding: 0; }.activity-list li { align-items: center; border-bottom: 1px solid var(--color-border); display: flex; justify-content: space-between; padding: var(--space-2) 0; }.activity-list span { color: var(--color-text-muted); font-size: .9rem; }
.module-section { margin: var(--space-6) 0; }.module-grid { grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr)); }.module-card { display: flex; flex-direction: column; min-height: 13rem; }.module-card h3 { color: var(--color-primary-strong); font-size: 1.25rem; margin: 0 0 var(--space-2); }.module-card p:not(.module-card__eyebrow) { color: var(--color-text-muted); flex: 1; }.module-card .button-link { align-self: flex-start; }
.form-layout { display: grid; gap: var(--space-4); }.form-layout > label, .form-layout fieldset > label { margin: 0; }.form-layout fieldset { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); padding: var(--space-4); }.form-layout fieldset > legend { grid-column: 1 / -1; }.form-layout fieldset .attempt-grid { grid-column: 1 / -1; }.form-layout textarea { min-height: 7rem; }.form-layout .field-wide { grid-column: 1 / -1; }.form-actions { align-items: center; border-top: 1px solid var(--color-border); display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-2); padding-top: var(--space-4); }.form-actions .button, .form-actions button { margin: 0; }.form-actions .button--ghost { border-color: var(--color-border); }
.form-error { margin: 0; }.field-help { color: var(--color-text-muted); font-size: .9rem; margin: calc(var(--space-2) * -1) 0 0; }.readonly-results { background: var(--color-surface-muted); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: var(--space-4); }.readonly-results h2:first-child { margin-top: 0; }
@media (max-width: 760px) { .navigation-toggle { display: inline-flex; min-height: 2.25rem; padding: .35rem .6rem; }.primary-navigation { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-card); box-shadow: var(--shadow-card); display: none; flex-direction: column; left: var(--space-3); padding: var(--space-2); position: fixed; right: var(--space-3); top: 3.8rem; }.primary-navigation[data-open] { display: flex; }.primary-navigation .nav-link { border-bottom: 0; border-radius: var(--radius-control); padding: var(--space-3); width: calc(100% - 1.5rem); }.primary-navigation .nav-link.active { background: var(--color-primary-soft); }.context-navigation { padding-left: var(--space-3); padding-right: var(--space-3); }.dashboard-hero, .section-heading { align-items: flex-start; flex-direction: column; }.dashboard-hero { margin-top: var(--space-5); }.dashboard-hero form { width: 100%; }.dashboard-hero form button { width: 100%; }.metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.form-layout fieldset { grid-template-columns: 1fr; }.form-actions { align-items: stretch; flex-direction: column; }.form-actions .button, .form-actions button { width: 100%; } }
@media (max-width: 420px) { .metric-grid { grid-template-columns: 1fr; }.site-header__actions { gap: var(--space-1); }.navigation-toggle span:last-child { display: none; } }

.search-form { align-items: end; grid-template-columns: minmax(0, 1fr) auto; margin: var(--space-4) 0; }.search-form .form-actions { border: 0; margin: 0; padding: 0; }.table-container { border: 1px solid var(--color-border); border-radius: var(--radius-card); margin: var(--space-4) 0; }.table-container table { margin: 0; }.record-actions { align-items: center; display: flex; flex-wrap: wrap; gap: var(--space-2); min-width: 11rem; }.record-actions .button, .record-actions button { min-height: 2.2rem; padding: .4rem .6rem; }.record-actions .inline { margin: 0; }
.card > table { border: 1px solid var(--color-border); border-radius: var(--radius-card); }.pagination a { align-items: center; background: var(--color-surface-muted); border: 1px solid var(--color-border); border-radius: var(--radius-control); display: inline-flex; min-height: 2.25rem; padding: .35rem .65rem; text-decoration: none; }
@media (max-width: 760px) { .search-form { grid-template-columns: 1fr; }.search-form .form-actions { width: 100%; }.search-form .button { width: 100%; } }

/* Analytical views mirror the clinical hierarchy of the mobile applications. */
.analysis-page { display: grid; gap: var(--space-4); min-width: 0; }
.analysis-header { align-items: start; display: grid; gap: var(--space-4); grid-template-columns: minmax(0, 1fr) minmax(13rem, 18rem); min-width: 0; }
.analysis-header h1 { margin: 0; }.analysis-header__summary { color: var(--color-text-muted); margin: var(--space-1) 0 0; }
.athlete-context { background: var(--color-primary-soft); border: 1px solid var(--color-border); border-radius: var(--radius-card); display: grid; gap: var(--space-1); padding: var(--space-3); }
.athlete-context__label { color: var(--color-text-muted); font-size: .82rem; font-weight: 700; text-transform: uppercase; }.athlete-context strong { color: var(--color-primary-strong); }
.analysis-card { min-width: 0; padding: var(--space-5); }.analysis-card h2 { color: var(--color-primary-strong); font-size: 1.25rem; margin: 0 0 var(--space-2); }
.analysis-guidance { background: var(--color-primary-soft); border-left: .25rem solid var(--color-primary); border-radius: 0 var(--radius-control) var(--radius-control) 0; color: var(--color-text); margin: var(--space-4) 0; padding: var(--space-3) var(--space-4); }
.analysis-guidance strong { display: block; margin-bottom: var(--space-1); }
.analysis-actions { align-items: center; border-top: 1px solid var(--color-border); display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-4); padding-top: var(--space-4); }
.history-actions { align-items: center; display: flex; flex-wrap: wrap; gap: var(--space-2); margin: var(--space-3) 0 var(--space-4); }
.history-actions .button { min-height: 2.45rem; }.analysis-empty { margin: var(--space-4) 0; }
.trend-chart { background: var(--color-surface-muted); border: 1px solid var(--color-border); border-radius: var(--radius-card); margin: var(--space-4) 0; padding: var(--space-3); }.trend-chart figcaption { color: var(--color-primary-strong); font-weight: 800; }.trend-chart__canvas { min-height: 10rem; margin-top: var(--space-2); }.trend-chart__canvas svg { display: block; height: 10rem; max-width: 100%; width: 100%; }.trend-chart__axis { stroke: var(--color-border); stroke-width: 1; }.trend-chart__line { fill: none; stroke: var(--color-primary); stroke-linecap: round; stroke-linejoin: round; stroke-width: 3; }.trend-chart__point { fill: var(--color-primary-strong); }.trend-chart__fallback { color: var(--color-text-muted); font-size: .85rem; margin: var(--space-2) 0 0; }
@media (max-width: 760px) { .analysis-header { grid-template-columns: 1fr; }.analysis-card { padding: var(--space-4); }.analysis-actions { align-items: stretch; flex-direction: column; }.analysis-actions .button { width: 100%; } }